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J. A. McANULTY. CHOP GRADING MACHINE.

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Patented Sept. 11, 1-894.

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(No Mo'deL) 4 Sheets-Sheet 2. J. A. MoANULTY. CHOP GRADING MAGHINE. No.526,017. Patented Sept-11, 1894.

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(No Model.) 4 Sheets-Sheet 3.

J. A. MoANULTY. CHOP GRADING MACHINE.

" N0 526,017. Patented Sept. 11, 1894.

- WITNESSES: INVENTOR- AWMg. flM/Z fiflmf 77%,,

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' (No Model.) 4 Sheets-Sheet 4.

J. A. MeANULTY.

GHOP GRADING MACHINE. No. 526,017. K Patented Sept. 11, 1894.

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STATES JOHN ARMSTRONG MOANULTY, OF MANHEIM, ASSIGNOR, BY MESNE ASSIGN-MENTS, TO WILLIAM T. NELSON PENNSYLVANIA.

AND J. HAMILTON SMALL, OF YORK,

CHOP-GRADING MACHINE.

SPECIFICATION forming part of Letters Patent No. 526,017, datedSeptember 11, 1894.

' Application filed October 16, 1893. Serial No. 488,345. (No model.)

To aZZ whom it may concern:

Be it known that 1, JOHN ARMSTRONG Mo- ANULTY, a citizen of theUnitedStates, residing at Manheim, in the county of Lancaster and Stateof Pennsylvania, have-invented certain new and useful Improvements inChop- Grading Machines; and I do hereby declare the following to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

My invention relates to improvements in sieve separating machines inwhich sifting frames are flexibly and adjustably suspended 1 5 and towhich reciprocating motion is imparted, and the sieves prevented fromclogging by means of traveling brushes, and the object of myimprovements are: first, to provide means of communicating a doublejarring motion to the sifting frames; second, to provide means i ofsuspending sifting frames, whereby their pitch or inclination may bevaried from one degree of pitch or inclination to any inclinationdesired; third, to provide means of applying vibratory motion to siftingframes in such a manner as to reciprocate the sieves at right angles ortangentially to the plane thereof; fourth, to provide means of impartingto the sieves a greater or less degree of 0 jar or vibrating motion;fifth, to provide improved means for suspending and operating travelingbrushes for cleaning the sieves; sixth, to provide means of distributingthe material in a perfect manner on the sieves.

Similar figures refer to similar parts throughout the several views.

Figure 1 is a side elevation of my invention. Fig. 2 is a longitudinalsectional elevation. Fig. 3 is a transverse sectional view. Figs. 4 0 to8 are enlarged views of various details.

Within the frame or casing 10 may be suspended one or more siftingframes 11 by means of transverse sieve bars 12 to which the sieves arebolted and which extend out through the end walls of the machine and arebolted to bars 13 by means of bolts 14. The bars 13 are attached toslotted segment stirrups 15 by means of bolts 16 which pass through thesegment slots and bars by which they are clamped together in anyposition deeled around boxes which are set in the casing sired. Theupper and lower extremities of the stirrups 15 are bolted-to flexiblebars 17 the ends of which are bolted to projections forming part ofyokes 18 which are movably mounted on the frame work 10 by being swiv-10 and are held in position at their outer ends by bolts and nutsconnecting them with the slotted segments 20 and 21 which are attachedto the walls of the machine.

To the stirrups 15 are adj ustably attached friction blocks 22 which maybe raised and lowered to any desired point and held in place by means ofbolts and nuts 23.

Segment cams 24 having an uneven number of rounded projections aremounted between the upper and lower friction blocks 22 on both sides ofthe machine on through shafts 25 which have their bearings in the boxes19. These segment cams when put in motion by means of power applied tothe through shafts impart to the stirrups 15 a vibrating motion owing tothe segments or cams acting alternately against the upper and lowerfriction blocks and by means of, the stirrup connections with the sieves11 a positive up and down jar is imparted to the sieves. The upward jarserves to keep the material passing over the sieve agitated, whilethedownward jar tends to dislodge any particles having a tendency to stickin the meshes of the cloth.

The inclination of the sieves may be varied or changed from one line ofpitch or inclination to another by changing the position of the yokes 18which are swiveled between the segment supports 20 and 21.

A further adjustment of the inclination of the sieves is made bychanging the position of the bars 13 relatively to the stirrups 15 bymeans of the adjustable bolt connections 16. It will also be observedthat the line of vibration imparted to the sieve by means of theadjustable connections of the bars 13 with the stirrups 15 ma y bechanged from that of the line of right angle to the plane of sieve, toan angle declining toward the discharge end of the sieve, whichfacilitates the passage over the sieve of the material being sifted ormay be changed to inclinethe line of vibration or movement of sievestoward 10c the head of sieve which serves to retard the passage of thematerial over the sieves and subject it to a longer and more severetreatment.

The force of the jar given the sieves is regulated by setting the upperfriction blocks into contact with the revolving segment cams. When inlight contact the jar is mild, but when set down hard upon the segmentcams a much harder jar is given the sieves.

The changes in the pitch or inclination of the sieves, as well as thedirection of the movement imparted to the sieve, and the limit and forceof the stroke, may all be effected when the machines are in motionwithout in the least interfering with the workings of the severaldevices.

Guide ways 28 are movably and adjustably attached to the heads and tailsof the sieve frames as shown in Fig. 2 in which travel the two ends ofbrush bars 29 in which brushes are afiixed for cleaning the cloth andwhich are held in constant contact with the cloth and said brushes aremoved transversely back and forth under the sieves by means of a brushmoving device mounted upon the reverse threaded through shafts 25 towhich it is coupled by means of a movable toggle which travels in thethreads in the shaft.

The material to be treated is fed on to the head of the sieve from thehopper as shown in'Fig. 2 which is provided with a yielding andadjustable gate; and as it passes over the vibrating sieve the fiberparticles are sifted through the sieve and are conveyed from the machineby any of the well known devices for conveying material.

I am aware of the invention and use of sieving machines having variousmeans of I adjustments, of sieves, and brushes. Such I do not claimbroadly.

What I do claim, and desire to secure by Letters Patent, is-

1. In chop grading machines, the combination with the shaft 25 havingcams 24 affixed thereto, the stirrups 15, the friction blocks 22, springbars 17, the yokes 18, the segments 20 and 21, all as and for thepurpose set forth.

2. The combination with the yokes 18, pivotally mounted on the frame andhaving outward extending arms aflixed thereto the stirrups 15 havinginwardly extending arms, the friction blocks 22 and the connectingsprings 17, as described.

3. The combination in a chop grading machine with the yokes 18 pivotallymounted on the casing and having the stirrups 15 flexibly connectedtherewith, the friction blocks 22, the side bars 13 and connecting bolts16, all as and for the purpose specified.

4;. In a sieve separating machine the combination with the casing 10,the bearing 19, the yoke 18, the segments 20 and 21, the bars 17 thestirrups 15 and the bars 13 all as and for the purpose described.

5. In a sieve separating machine the combination with the sieve framehaving transverse bars attached thereto extending outward through thewalls of the machine, the cross bar 13, the stirrups 15 having theirupper and lower ends attached to the flexible supporting bars 17 and theadjustably supported yokes 18 all as and for the purpose described.

6. The combination with the yokes 18 the supporting bars 17, thestirrups 15, the adj ustable friction blocks 22, all as and for thepurpose described. v

7. The combination with the side bars 13, the flexibly supportedstirrups and the movable friction blocks 22, all as and for the purposedescribed. I

8. The combination of the sieve frame havin g movable brush supportingways attached thereto as described, the transverse supporting bars 12,the bars 13, the stirrups 15 and the yokes 18 all as and for the purposeset forth.

9. The combination with the sieve frame 11, the adjustable ways 28, andthe brush bar 29, the brush moving device and through shaft 25, allacting together as described and for the purpose set forth.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN ARMSTRONG llleANUL'lY.

Witnesses:

FRANK E. KEIFFER, AMos G. HAMAKER.

